html,body,h1,h2,h3,h4,h5,h6,a,ul,li,ol,dl,dd,dt,span,a,img,div,i,input{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{
    text-decoration: none;
}
ul li {
    list-style: none;
}

